Bobo

Bobo is a gorilla in "Gorillas in the Mist". When Steve enters the gorilla enclosure at the zoo courtesy of Wilson, Bobo captures Steve and proceeds to play with him while keeping him captive. When Bobo's handler arrives, Bobo uses sign language to tell the handler that he wants to keep Steve overnight. As Stan worries about how to recover his son, Bobo's father Rex signs to Bobo that he should release Steve and grounds Bobo for three moons.